单选题：Infrared radiation can produce heat__________

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题目类型：单选题
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题目内容：

Infrared radiation can produce heat__________ A．when it is absorbed by matter
B．when it is cloudy
C．because they can pass through solid objects
D．when the sunrays are fierce
E．when a change in the nucleus of an atom takes place
F．when electron rearrangement takes place

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